ceowley



2 LL En H WS 0B RH om -.N J.Y

(No Model.)

- No. 536,565. Patented Maize', 1895.A

WPI-KIES 51:5; 7%@ @L6M (no madam o. J; CROWLEY. l l t DYNAMITL SHELL. 4 l No. 536,565. Patented Mar'. 26 189' INVENTUM WIT Nraag Z/ A ZW m 45%/ M UNITED STATES PATENT OFFICE.

CHARLES J. CROWLEY, OF LAWRENCE, MASSACHUSETTS, ASSIGNOR, BY

MESNE ASSIGNMENTS, OF ONE-THIRD TO JOHN T. MCG'OVERN, OF SAME PLACE.

nYNAMrrs-SHELL. f*

SPECIFICATION forming part of Letters Patent No.` 536,565, dated March 28, 1895.

Application tiled July 26,1894. Serial No. 518,643. (llo model.) l

To all whom it may concern.- A`metallic ring or washer,j,is'droppedinto Be it known that 1, CHARLES J. CROWLEY, the shell and butts against the cartridge cylof Lawrence, in the county of Essex, Stateof inder. Theinterior ofsaid ring formsavalve- Massachusetts,haveinventedcertain newand seat, lc, the use of which is hereinafter de- 55 5 useful Improvements in Dynamite-Shells, of scribed. The forward end of the shell is inwhich the following is a description sutiteriorly tapped and screw-threaded and a holciently full, clear,and exact to enable any perlow conical tip, C, is turned therein. son skilled in the art or science to which said Air-ports or openings, m, are formed in the invention appertains to make and use the tip. Through the apex of the tip a spindle, '6e to same, reference being had to the accompany- D, is fitted to rotate provided exteriorly of the ing drawings, forming part of this specicatip with a fan cap, p, which will actuate said tion, in whichf spindle as a shell passes through the air.

Figure 1 is a side elevation of my improved The inner end of the spindle is screw-threadf shell; Fig. 2, a vertical longitudinal section of ed at, q, and a nut,'r, is tted to travel thereon. 6 5 r 5 the same; Fig. 3, a transverse section taken Said nut formsa valve which will seat on the on line 3, 3, in Fig. 2; Fig. 4,alike view taken ring, j, closing th'e cartridge cylinder. The on line 4, 4, in Fig. 2, and Fig. 5 a sectional' end'is grooved or slotted longitudinally at, t, view showing` the dynamite charge inclosed and guide-pinar, project through the tip into in the shell and thevalve screwed home. said slots. The valve, 1', tits loosely in the tip 7e 2o Like letters of reference indicate correand permits the free passage of air through sponding parts in the different figures of the the ports, m, into the cartridge cylinder. drawings. In the use of my improvement, the tip is My invention relates especially to a dynaturned oft and a dynamite cartridge inserted mite shell or projectile, the object being to in the cylinder, B. The tip is then replaced 7 5 2 5 protect the dynamite cartridge from accidenwith the valve, r, withdrawn from its` seat. tally exploding during the passage of the shell The air space entirely around the cartridge until it contacts with the object atwhich it is cylinder and the ports, m, permitting the free tired and to accomplish this I so construct the circulation of air within the shell avoids the shell and cartridge that a space for air circudanger of accidental explosion of the dyna- 8o. 3o lation is formed between them which acts as mite when the shell is iiredfrom the gun, or a cushion to prevent-the recoil from explodshould the shell ne dropped in loading the ing said cartridge. gun. The air formsa cushion which will pre- The nature and operation of the improvevent such shock as the shell receives frm the i ment will be readily understood by all converexplosion following the' discharge of the gun, 85 3 5 sant with such matters from the following exfrom prematurely exploding the cartridge. It planation: is essential that this circulation and escape of In the drawings, A represents the outside air be allowed. After the gun is discharged shell `or casing which is a metallic cylinder while the shell is on its passage through the of suitable thickness one end thereof being air the spindle is rapidly rotated by its fan- 9o 4o closed by a screw butt, d. cap driving the valve, r, thereon against its The dynamite cartridge, B, consists of acylseat, as soon as the shell is an appreciable inder of less exterior diameter than the intedistance from th'e muzzle of the gun. The rior diameter of the shell and open at both spindle slides freely in the tip and when the ends. Near the end on its outer surface the fan cap engages the object at which the shell 95 45 cartridge cylinder, B, is provided with aseries is fired the impact drives said spindle inward of bosses, f, so that when disposed in th shell and the concussion of the valve against the an air space, g, is left extendingentirely dynamitecartridge is suicient to explode the around said cylinder. y In each end of said same the chamber having been rendered air cartridge cylinder, air openings or notches, h, tight by said valve. The notches, h, permit icc 5o are formed and prick holes, t', are constructed the free circulation of air in the space and" in the side wall of the cartridge cylinder. around the cartridge at the butt. The cartridge is pricked through the holes, fi, in the usual manner before firing.

Having thusexplained my invention, what I claim is-"` 5 1. A dynamite`shell comprising an outer shell or casing; an open end cartridge cylinder disposedwithin said casing in such manner as to leave an air space entirely around it; a conical tip closing the end of the casing;

xo a valve-seat in the tip end of the cylinderpir openings leading through the tip to said space; a screw-valve in said tip for engaging said seat and a fan cap on the tip for actuating said valve, substantially as specified.

2. In a dynamite shell a casing provided with a conical tip having air ports; a cartridge /cylinder disposed within said casing and leav-4 ing' an air space around it connecting with said `ports-and devices actuated automatically 2o by the passage Iofthe shell for-closing said space. 3. In a dynamite shell a casing provided with a conical tip having air ports; a cartridge cylinder disposed within said casing and leav- 2 5 ing an airspace around it connecting with saidports; devices actuated automatically by the passage of the shell for closing said space, and mechanism actuated by the impact of the shell for exploding the cartridge in said cyl- 3o inder.'

4. In a dynamite shell the combination with the casing and conical tip of an air actuated spindle in said tip; air ports in the tip leading into the casing and a valve actuated by the rotation of the spindle for closing said ports, substantially as and for the purpose set forth. l

5. In a dynamite shell a casing and conical tip provided with air ports; a cylinder dispo'sed within said easing leaving an air space around it connecting with said ports; a valve seat in the tip end of said cylinder; an airactuated spindle fitted to rotate in said tip; a screw-valve on said spindle adapted to engage said seat and close said ports all being tfzombined and arranged 'substantially as set orth.

6. The combination with the casingand tip having air ports, of the cylinder, B, provided with notches, h, disposed within said casing leaving a space; the valve-seat, k, in the outer end of said cylinder; the rotary spindle, D, having a fan-cap, p, and the valve, r, working on said spindle, substantially as described.

CHARLES J. CROWLEY.

Witnesses:

K. DURFEE, O. M. SHAW. 

